Right Angle
90 degree angle
A right angle is an angle that measures 90 degrees. It is formed by two intersecting lines or line segments that are perpendicular to each other. One of the most common ways to denote and label a right angle is by drawing a small square (also known as a box or symbol for right angle) at the vertex of the angle. The symbol is placed where the vertex of the angle is located to indicate that the angle is a right angle. A right angle can also be denoted by the letters Rt, RA, or 90°. In practical terms, a right angle is often used as a reference point or benchmark for other angles, shapes, and geometric constructions. For example, many geometric shapes, such as rectangles and squares, contain right angles, and engineers and architects often use right angles when designing buildings or structures to ensure that they are level and stable.
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